Downloaded from common knitting defects. 8 MIL-STD-1491 Downloaded from . MIL-STD-1491 Barre Birdseyes (Tucking defect) Bowing Crackmarks Creases

TO ALL HOLDERS OF

1. The followinglisted:

New Page

MIL-STD-1491NOTICE 117 September 1973

MILITARY STANDARD

GLOSSARY OF

KNITTING IMPERFECTIONS

MIL-STD-1491

pages of MIL-STD-1491 have been revised and supersede the pages

Date Superseded Page Date

ii 17 September 1973 ii 3 December 19713 " " " 37 "

3 December 1971" " 7 3 December 1971

2. The attached Photographic Supplement and Table of Contents are added.

3. Retain this notice.

4. Holders of MIL-STD-1491 will verify that pages changed above have been enteredand will destroy the previous pages. The notice page will be retained as a check

sheet. This issuance, together with appended pages, is a separate publicationEach notice is to be retained by stocking points until Military Standard is completelyrevised or cancelled.

FSC 83GP

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MIL-STD-1491

DEPARTMENT OF DEFENSE

Washington, DC 20301

Glossary of Knitting Imperfections

MIL-STD-1491

1. This standard has been approved for use by the Department of the Army, Navy andAir Force effective 3 December 1971.

2. Recommended corrections, additions or deletions should be addressed to US ArmyNatick Laboratories (GL), Natick, MA.

Supersedes Page ii of 3 December 1971

ii



Foreign matter

Fuzzy

Heavy yarn

Hole

Horizontal streaks

Kink

Knot

Ladder

Lint

Loose course

Loose yarn

Luster difference

Mend

Miss-knit

MIL-STD-1491

Waste, fly or extraneous material that has been knit intothe fabric or spun into the yarn.

A fabric condition characterized by excessive hairiness.

Yarn of a noticeably larger diameter than normally beingused in the fabric.

A place in the fabric where two or more contiguous loopsor yarns have been ruptured.

(See “Barre”).

A place in the fabric where a short length of yarn hasdoubled on itself.

Self-descriptive.

(See “Run”).

(See “Foreign Matter”).

A row of loops in the width or crosswise direction thatis larger, looser or longer than the body material.

Yarn that has been knit-in under insufficient tension.

Self-descriptive (see “Barre”, “Mixed yarn”).

Damaged, defaced or torn fabric that has been fixed orrepaired.

Wrong formation or description of the normal knittingpattern (see “Float”).

Supersedes Page 3 of 3 December 1971

3



MIL-STD-1491

Vertical lines Lengthwise marks occurring in knitted fabric. Sometimescalled doglines or needle lines.

Washboards A riagy effect on the fabric which can be caused by uneventension between feeds or by variations of yarn denier.

Weak spot Places in the fabric which have beer abnormally weakened dur-ing any part of the operations through which it has passed.A latent defect that is not normally observable in normal in-spection.

Whispering Breaking or fraying of the individual filaments of the yarn.

Width variation - Self-descriptive.

Yarn variation Yarn irregularity of weight per unit length. Usually eithera course or wale is noticeably thicker or thinner than ad-jacent yarns.

Short term - 1 to 10 times the fiber length,

Medium term - 10 to 100 times the fiber length.

Long term - 100 to 1000 (or more) times the fiber length.

Custodians:

Army - GLNavy - SAAir Force - 11

Review activities:

Navy - ASAir Force - 45, 82

User activities:

Army - AVNavy - MC, SH, YD

Supersedes Page 7 of 3 December 1971

7

Preparing activity:

Army - GL

Project No. 83GP-0338


PHOTOGRAPHIC

SUPPLEMENT

TO

MIL-STD-1491

CAUTION

These photographs are not acceptancelimits. They are only visual guidesto aid in recognition of the morecommon knitting defects.

8

MIL-STD-1491


MIL-STD-1491

Barre

Birdseyes (Tucking defect)

Bowing

Crackmarks

Creases

Dropped Stitches

3

4

5

6

Heavy

Hole

Loose

yarn

Course

Missing yarn

Press off

Run

Slub

Spots

Thin yarn

Tucking defect 16

Vertical

Vertical

line

lines

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● U.S. GOVERNMENT PRINTING OFFICE: 1976—703-020/1236



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